Bingley Bypass is closed in between Saltaire and Bingley and numerous filming trucks and crew can be seen in the area.
However, it has not yet been revealed which show or film is being shot, but police and ambulance vehicles can be seen in the area.
A notice by Bradford Council said the road would be closed between 6am and 9pm on May 15 for "filming to be executed".
However, the notice also alarmingly says that the closure could be in place for up to 18 months if necessary.
The notice says a one-way traffic flow system will be in place heading northbound on Sir Fred Hoyle Way between Bradford Road to its junction with Aire Valley Road.
It adds: "Pedestrian access will be maintained at all times. Alternative routes for vehicular traffic affected by the order will be available via Bradford Road, Main Street, Keighley Road, Aire Valley Road and vice versa."
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